Throughout Pikmin 3 there are hidden murals – these are small abstract drawings of Pikmin doing various tasks. They are normally found in dark or not-so-obvious locations, and most of the time are too small to see clearly, so to view them with detail, the KopPad's camera feature is necessary. The origin of these images is currently unknown, and it is not clear if these are rock paintings or engravings, known as petroglyphs. Each area in story mode has three drawings, and each area contains drawings of only one Pikmin type, with each of the markings representing that Pikmin in a different maturity.
In Pikmin 3, these drawings are simply Easter eggs with no in-game reward for finding them, but in Pikmin 3 Deluxe, their existence is acknowledge by Olimar, and taking photos of the murals with the KopPad's camera earns the player badges. Taking a picture of 5 yields the "Archaeology Hobbyist" badge, and taking a picture of all 15 results in the "Legendary Archaeologist" badge.
Garden of Hope
Besides these drawings, there is also a hidden carving of sorts in this area.